Effect of wall thermal conductivity and thickness on the performance of heat-recirculating reactors

Jeongmin Ahn, P. D. Ronney

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recent studies of spiral counterflow "Swiss-roll" heat-recirculating reactors have demonstrated the importance of streamwise heat conduction on their performance. Titanium-811 Swiss rolls having a thermal conductivity (k) of 6 W/m-K, geometrically similar to inconel-718 reactor (k ≈ 11.4 W/m-K), were constructed to test this hypothesis using propane-air mixtures with speciallyprepared Pt catalyst. Three different wall thicknesses were studied. As suggested by theoretical studies, better performance was found for low-k, thin-walled reactors. Under these conditions, self-sustaining chemical reaction could be maintained at maximum temperatures below 55 °C with ignition temperatures below 90 °C. These results may be useful for development of micropower generation devices employing thermoelectrics or solid-oxide fuel cells.

Original languageEnglish (US)
Title of host publication5th US Combustion Meeting 2007
PublisherCombustion Institute
Pages3278-3284
Number of pages7
Volume6
ISBN (Print)9781604238112
StatePublished - 2007
Event5th US Combustion Meeting 2007 - San Diego, United States
Duration: Mar 25 2007Mar 28 2007

Other

Other5th US Combustion Meeting 2007
CountryUnited States
CitySan Diego
Period3/25/073/28/07

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

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  • Cite this

    Ahn, J., & Ronney, P. D. (2007). Effect of wall thermal conductivity and thickness on the performance of heat-recirculating reactors. In 5th US Combustion Meeting 2007 (Vol. 6, pp. 3278-3284). Combustion Institute.